PMID: 9179513Apr 14, 1997Paper

Effects of thyrotropin-releasing hormone and metoclopramide on PRL secretion in normally cycling and amenorrheic alcoholic women

Drug and Alcohol Dependence
P P Vescovi, V Coiro

Abstract

To assess the possible influence of alcoholism on the dopaminergic inhibitory control of prolactin (PRL) secretion, 10 mg of the dopaminergic antagonist metoclopramide (MTC), was injected i.v. in a group of eight healthy abstemious women (aged 28 +/- 6 (mean +/- S.E.) years) and in 16 aged-matched nondepressed female alcoholic subjects after 3-4 weeks of abstinence from alcohol. All normal controls and eight alcoholics had normal menstrual cycles and were tested in the early follicular phase (4-8 days), the remaining eight alcoholics were affected by amenorrhea (duration: 15 +/- 3 months). During the same period, all patients were also tested with TRH (200 micrograms in an i.v. bolus) to determine whether the pituitary PRL cell secretory capacity was preserved in alcoholics. The amenorrheic alcoholic group showed strikingly lower circulating estrogen levels than normally cycling groups. Similar basal PRL levels and PRL responses to TRH were observed in normal controls and normally cycling alcoholics, whereas basal and TRH-stimulated PRL levels were significantly higher in amenorrheic alcoholics. In contrast, the PRL response to MTC was significantly higher in cycling alcoholic patients than in normal controls and amenorrheic al...Continue Reading

References

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